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Neuroethological analysis of memory retention in conditioned taste aversion.

Research Project

Project/Area Number 15570068
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Animal physiology/Animal behavior
Research InstitutionJapan Women's University

Principal Investigator

MIYAMOTO Takenori  Japan Women's University, Faculty of Science, Associate Professor, 理学部, 助教授 (10167679)

Co-Investigator(Kenkyū-buntansha) KIMOTO Mari  Japan Women's University, Faculty of Home Economics, Lecturer, 家政学部, 講師 (60101565)
FUJITA Naoko  Japan Women's University, Faculty of Science, Research Associate, 理学部, 助手 (10207293)
BABA Tomomi  Nagasaki University, Graduate School of Biomedical Sciences, Research Associate, 大学院・医歯薬学総合研究科, 助手 (60189727)
MIYAZAKI Toshihiro  Nagasaki University, Graduate School of Biomedical Sciences, Research Associate, 大学院・医歯薬学総合研究科, 助手 (10174161)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2004: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2003: ¥2,800,000 (Direct Cost: ¥2,800,000)
Keywordspropofol / conditioning / acquisition / extinction / cFos / immunohistochemistry / gustatory pathway / basolateral amygdala / 静脈麻酔薬 / α_2受容体 / ヨヒンビン
Research Abstract

Intravenous anesthetics such as propofol are known to induce antero- and retrograde amnesia. In previous works, these anesthetics have been reported not to affect the acquisition of conditioned taste aversion(CTA) by their application prior to the presentation of conditioned stimulus(CS). On the other hand, the noradrenergic system is thought to play an important role for the memory retention. Therefore, we examined the effect of propofol applied between CS and unconditioned stimulus(US) on retention of CTA. Propofol did not affect the acquisition of CTA in all concentrations examined. However, the retention of CTA was dose-dependently suppressed by them. An alpha2 blocker, yohimbine, also remarkably impaired the retention of CTA. These results suggest that low concentrations of propofol affect the CTA memory retention mechanism including alpha2 noradrenergic receptors. The similar results were obtained with mice from a mouse inbred strain, C57BL/6,suggesting that mice have a common site sensitive to propofol in the emotional learning and memory system to rats.
We tried to identify the receptive site of propofol in the brain, using an immediately early gene, cFos immunoreactivity (Fos-IR) as a maker protein for neuronal activation. The mice brain was fixed by transcardial α α perfusion 1 hr after CTA acquisition and Fos-IR of a group injected with propofol (propofol group) was compared to that of a control group injected with physiological saline at several brain area including the secondary center of gustatory sense, parabrachial nucleus(PBN), the anterior nuclei of thalamus, the amygdala and the cerebral cortex gustatory area (insular cortex). We found that Fos-IR tend to increase in the basolateral amygdala, in spite of no significant difference in all the brain area examined. These results suggest that the amygdala plays important roles on the retention as well as the acquisition of CTAM.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (12 results)

All 2004 2003 Other

All Journal Article (10 results) Publications (2 results)

  • [Journal Article] 哺乳類味細胞の塩味受容機構2004

    • Author(s)
      宮本武典
    • Journal Title

      比較生理生化学 21・1

      Pages: 2-21

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 鳥のさえずり:音声学習・知覚の脳内神経機構2004

    • Author(s)
      藤原宏子他
    • Journal Title

      比較生理生化学 21・2

      Pages: 89-89

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Sexual dimorphism of acoustic signals in the oriental white stork : Non-invasive identification of sex in birds.2004

    • Author(s)
      Eda-Fujiwara, H他
    • Journal Title

      Zoological.Science 21

      Pages: 817-821

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] 哺乳類味細胞の塩味受容機構2004

    • Author(s)
      宮本武典
    • Journal Title

      日本味と匂誌 11・1

      Pages: 17-18

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 味覚情報受容のメカニズム2004

    • Author(s)
      宮本武典
    • Journal Title

      比較生理生化学 21・1

      Pages: 2-21

    • NAID

      10025857175

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Subhypnotic doses of propofol accelerate extinction of conditioned taste aversion2003

    • Author(s)
      Ishitobi, S. et al.
    • Journal Title

      Behavioral Brain Research 141

      Pages: 223-224

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Dopamine modulates a voltage-gated calcium channel in rat olfactory receptor neurons2003

    • Author(s)
      Okada.Y.et al.
    • Journal Title

      Brian Research 968

      Pages: 248-255

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Subhypnotic doses of propofol accelerate extinction of conditioned taste aversion

    • Author(s)
      Ishitobi, S. et al.
    • Journal Title

      Behav.Brain Res. 114

      Pages: 223-224

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Dopamine modulates a voltage-gated calcium channel in rat olfactory receptor neurons

    • Author(s)
      Okada, Y. et al.
    • Journal Title

      Brian Res. 968

      Pages: 248-255

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Sexual dimorphism of acoustic signals in the oriental white stork : Non-invasive identification of sex in birds

    • Author(s)
      Eda-Fujiwara, H. et al.
    • Journal Title

      Zool.Sci. 21

      Pages: 817-821

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] Ishitobi, S. et al.: "Subhypnotic doses of propofol accelerate extinction of conditioned taste aversion"Behavioral Brain Research. 141. 223-224 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Okada.Y.t al.: "Dopamine modulates a voltage-gated calcium channel in rat olfactory receptor neurons"Brian Research. 968. 248-255 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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